US 30-year Treasury yields rose to 5.44% on 24 September 2026, the highest level since 2004, according to Bloomberg Markets. The move is part of a broader bond market selloff attributed to persistent inflation concerns and fiscal sustainability worries. Yields across multiple maturities simultaneously reached levels not seen since 2007, with Bloomberg Markets reporting the move followed a spike in crude oil prices.
The selloff also pushed 5-year Treasury yields above 5% for the first time since 2007, reported Bloomberg Markets on 23 September 2026. The 10-year Treasury yield recorded its largest single-day move since April 2025, rising 15.2 basis points, according to Guardian Business. CME FedWatch repriced to reflect a 71% probability of an October rate hike and a 55% probability of two additional 25 basis point hikes by year-end, Guardian Business reported.
TLT, the iShares 20+ Year Treasury Bond ETF, is directly tied to long-duration US government debt and moved in response to the 30-year yield's rise. The US 30-year yield itself (US30Y) is the benchmark instrument at the centre of this repricing. Marketwatch TOP noted that analysts have begun discussing the possibility of 30-year fixed mortgage rates reaching 8%, given the trajectory of 10-year Treasury yields, reflecting the transmission of Treasury market moves into consumer borrowing costs.
Guardian Business cited strong PMI data and an oil price rebound as immediate catalysts for the repricing of Federal Reserve rate expectations, with US unemployment at 4.1% and growth running above trend. Bloomberg Markets noted that the global nature of the bond selloff reflects concurrent inflation and fiscal sustainability concerns across developed economies, not solely a US-specific dynamic.
Sources: Bloomberg Markets, Guardian Business, CNBC, Cnbc TOP, Marketwatch TOP, investinglive.com